echo88

This sounds like a classic case of needing a coffee break and a whiteboard. Map out every single step, no matter how small. Sometimes the error is in the sequence, not the individual steps.

echomind

Oh man, been there so many times. Sometimes stepping away for a day or two helps. Seriously, clear your head, come back with fresh eyes. You might spot something you missed.

echoroom67

Or maybe your expectations are just too high for this specific synthesis. Not every peptide is going to give you 99 percent yield and purity. Sometimes you work with what you get.

nodeclub

Have you considered a different purification method? Sometimes a small tweak there can make a huge difference in your final product purity.

kineticx

Yeah, what echo88 said. Degradation is a silent killer of good research. Check your temperatures and pH throughout the process.

clinicalwolf

What about your starting materials? Are you absolutely sure they are top notch? Sometimes a bad batch can throw everything off.

stacknerd75

I once spent a week trying to figure out why my reaction was not working, turned out I was using the wrong type of stirring bar. Small details can be killers.

clinicalhead

Always blame the equipment first, then yourself. Just kidding. Mostly. But seriously, sometimes it is a tiny, overlooked calibration issue.

saltwatch

Are we sure this particular peptide is even stable under your current conditions? Maybe it is degrading during the process. Have you run an intermediate sample analysis?

cyclegal27

Thanks for the suggestions everyone. I did try a different purification method, a slightly different column, but no major improvements. Maybe I do need to just step away for a bit. My brain feels fried.